President Bush's nominee to head the Joint Chiefs of Staff, meanwhile, acknowledged that slow progress in Iraq is hurting America's credibility and emboldening Iran's regional ambitions.

While steady progress has been made on the military front, Iraq's political factions have made only limited headway in achieving reconciliation, said Navy Adm. Michael Mullen, who has been nominated to replace U.S. Gen. Peter Pace as the nation's top military officer.

Iraq's parliament shrugged off U.S. criticism and adjourned for a month, as key lawmakers declared there was no point waiting any longer for Prime Minister Nouri al-Maliki to deliver Washington-demanded benchmark legislation for their vote.

Speaker Mahmoud al-Mashhadani closed the final three-hour session Monday without a quorum present and declared lawmakers would not reconvene until Sept. 4. That date is just 11 days before the top two U.S. officials in Iraq — Ambassador Ryan Crocker and military commander Gen. David Petraeus — must report to Congress on American progress in taming violence and organizing conditions for sectarian reconciliation.

The recess, coupled with Maliki's failure to get the key draft laws before legislators, may nourish growing opposition to the war among U.S. lawmakers, who could refuse to fund it.

Critics have questioned how Iraqi legislators could take a summer break while U.S. forces are fighting and dying to create conditions under which important laws could be passed in the service of ending sectarian political divisions and bloodshed. But in leaving parliament, many lawmakers blamed Maliki, saying he had failed to send them any legislation to consider.

"Even if we sit next month, there's no guarantee that important business will be done," said Mahmoud Othman, a prominent Kurdish legislator. The parliament already had extended its session by a month, having initially planned a recess for July and August.

President Jalal Talabani, a Kurd, was fighting Thursday to save the Shiite-dominated government from possible collapse, wheedling key Sunni Arab politicians to set aside threats to quit the Cabinet and counseling the prime minister to "seriously consider" their demands.

Talabani also warned of "negative consequences" if the six Cabinet ministers from the Iraqi Accordance Front were to leave al-Maliki's 14-month-old government. He did not elaborate, but the withdrawal of the Accordance Front's ministers could erase the government's "national unity" status and diminish its legitimacy.

Separately, officials said the Kurdish chief of staff of Iraq's armed forces, Gen. Babaker Shawkat Zebari, had submitted his resignation to Maliki on Sunday but that the Iraqi leader rejected it.

Prominent Kurdish lawmaker Mahmoud Othman said Zebari had been frustrated by what he believed was excessive interference by the Shiite prime minister and the Sunni Arab defense minister.

Zebari could not be reached for comment, and it was not immediately clear whether he had agreed to stay on. His action, however, adds to the troubles of the embattled Maliki, who also holds the position of armed forces' commander in chief.

Also Monday, a U.S. Marine was killed while conducting combat operations in the vast Anbar province west of Baghdad, the military said.

The attack raised to at least 73 the number of U.S. service members who have died in Iraq in July, the lowest number since November 2006, when at least 70 U.S. deaths were reported. The monthly toll topped 100 in April, May and June.

In all, at least 3,652 members of the U.S. military have died since the Iraq war started in March 2003, according to an Associated Press count. The figure includes seven military civilians.

The No. 2 commander in Iraq, Lt. Gen. Ray Odierno, expressed cautious optimism last week about the downturn. He said casualties had increased as U.S. forces expanded operations into militant strongholds as part of a five-month-old security crackdown aimed at clamping off violence in Baghdad, but were going down as Americans gained control of the areas.

"It's an initial positive sign, but I would argue we need a bit more time to make an assessment whether it's a true trend," he said then.

An unmanned U.S. drone also crashed late Monday while landing at an air base north of Baghdad, but it did not appear to be from hostile activity, the military said separately.

The U.S. has an estimated two dozen or more unmanned MQ-1 Predators doing surveillance over Iraq. They have become mainstays of the U.S. war effort, offering round-the-clock airborne "eyes" watching over road convoys, tracking nighttime insurgent movements via infrared sensors, and occasionally unleashing one of their two Hellfire missiles on a target.

In scattered violence reported by police Tuesday, at least 11 people were killed or found dead nationwide, including three Iraqi police in a drive-by shooting and one soldier in a roadside bombing. A teacher also was shot to death while driving to work in a mainly Sunni neighborhood in Baghdad.

Copyright 2007 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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